MFC r295549:
Loopback addresses are 127.0.0.0/8, not 127.0.0.1/32.

MFC r295668:
Improve the teardown of the SCTP stack.

MFC r295670:
Whitespace changes.

MFC r295708:
Address a warning reported by D5245 / PVS.

MFC r295709:
Code cleanup which will silence a warning in PVS / D5245.

MFC r295710:
Add protection code for issues reported by PVS / D5245.

MFC r295771:
Fix reporting of mapped addressed in getpeername() and getsockname() for
IPv6 SCTP sockets.
This bugs were found because of an issue reported by PVS / D5245.

MFC r295772:
Add some protection code.

MFC r295773:
Add protection code.

MFC r295805:
Use the SCTP level pointer, not the interface level.

MFC r295929:
Don't leak an address in an error path.

Approved by: re (marius)

MFC r292060:
Retire sctp_validate_no_locks().

This routine checks that there are no locks held for an inp,
without having any lock on the inp. This breaks if the inp
goes away when it is called. This happens on stress tests
on a RPi B+.

MFC r291904:
Fix the allocation of outgoing streams:
* When processing a cookie, use the number of
streams announced in the INIT-ACK.
* When sending an INIT-ACK for an existing
association, use the value from the association,
not from the end-point.

MFC r284515:
Add FIB support for SCTP.
This fixes https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=200379

PR: 200379

MFC r279859:

Add a SCTP socket option to limit the cwnd for each path.

MFC r269858:

Add support for the SCTP_AUTH_SUPPORTED and SCTP_ASCONF_SUPPORTED
socket options. Add also a sysctl to control the support of ASCONF.

MFC r269527:

Add support for the SCTP_RECONFIG_SUPPORTED and the corresponding
sysctl controlling the negotiation of the RE-CONFIG extension.

MFC r269481:

Add support for the SCTP_PKTDROP_SUPPORTED socket option and
the corresponding sysctl variable.
The default is off, since the specification is not an RFC yet.

MFC r269475:

Add SCTP socket option SCTP_NRSACK_SUPPORTED to control the
NRSACK extension. The default will still be off, since it
it not an RFC (yet).
Changing the sysctl name will be in a separate commit.

MFC r269448:

Add support for the SCTP_PR_SUPPORTED socket option as specified in
http://tools.ietf.org/html/draft-ietf-tsvwg-sctp-prpolicies
Add also a sysctl controlling the default of the end-points.

MFC r269436, r269445:

Cleanup the ECN configuration handling and provide an SCTP socket
option for controlling ECN on future associations and get the
status on current associations.
A simialar pattern will be used for controlling SCTP extensions in
upcoming commits.

MFC r284515:
Add FIB support for SCTP.
This fixes https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=200379

PR: 200379

MFC r279859:

Add a SCTP socket option to limit the cwnd for each path.

MFC r269858:

Add support for the SCTP_AUTH_SUPPORTED and SCTP_ASCONF_SUPPORTED
socket options. Add also a sysctl to control the support of ASCONF.

MFC r269527:

Add support for the SCTP_RECONFIG_SUPPORTED and the corresponding
sysctl controlling the negotiation of the RE-CONFIG extension.

MFC r269481:

Add support for the SCTP_PKTDROP_SUPPORTED socket option and
the corresponding sysctl variable.
The default is off, since the specification is not an RFC yet.

MFC r269475:

Add SCTP socket option SCTP_NRSACK_SUPPORTED to control the
NRSACK extension. The default will still be off, since it
it not an RFC (yet).
Changing the sysctl name will be in a separate commit.

MFC r269448:

Add support for the SCTP_PR_SUPPORTED socket option as specified in
http://tools.ietf.org/html/draft-ietf-tsvwg-sctp-prpolicies
Add also a sysctl controlling the default of the end-points.

MFC r269436, r269445:

Cleanup the ECN configuration handling and provide an SCTP socket
option for controlling ECN on future associations and get the
status on current associations.
A simialar pattern will be used for controlling SCTP extensions in
upcoming commits.